Malicious PDF — malware analysis report

Static analysis result for SHA-256 faec49d064dba303…

MALICIOUS

PDF

82.2 KB Created: 2021-03-14 15:03:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 03ea849818c0df1f4ab2ca1ee85ff397 SHA-1: 80c7bf2e896f074d0cd2264b33746b6de06ddc71 SHA-256: faec49d064dba303426df5ae947ee702b7954b6102e7edabeeae7349aab169a0
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://jottigo.ru/strik?utm_term=kenwood+tm-d710g+review PDF link annotation
    • https://cdn.sqhk.co/moxawitab/vJVibyo/diskdigger_photo_recovery_free_download.pdfIn PDF document text
    • http://risizotifapeju.iblogger.org/63260086345.pdfIn PDF document text
    • https://cdn.sqhk.co/sururezog/hhcRgjl/spider_hero_superhero_fighting_mod_apk_unlimited_money.pdfIn PDF document text
    • http://xoziduso.mypressonline.com/99833650491.pdfIn PDF document text
    • https://cdn.sqhk.co/sujubowip/hhgcjan/kuxorari.pdfIn PDF document text
    • http://repair-monokoles.ru/garmin_mini_dash_cam_overheatingc6p3j.pdfIn PDF document text
    • http://fb-copyright-help-from.com/1152435382664c1y.pdfIn PDF document text
    • https://cdn.sqhk.co/wofunukasu/QhjtYEh/samsung_galaxy_s10_ringtones.pdfIn PDF document text
    • http://wutopezogegusi.getenjoyment.net/creative_writing_lessons_elementary.pdfIn PDF document text
    • http://sebevifa.getenjoyment.net/favujijerekewitofukiweram.pdfIn PDF document text
    • https://cdn.sqhk.co/zubejavaxuvu/foNSghZ/83614700706.pdfIn PDF document text
    • https://cdn.sqhk.co/xenumobavun/Im3ia6v/66120141280.pdfIn PDF document text
    • http://afracheat1.xyz/telefono_informazioni_amt_genova3mdyr.pdfIn PDF document text
    • https://cdn.sqhk.co/jeporikate/gjhi3Y9/collage_maker_app_android.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sazurukoxoje.rf.gd/the_magic_tree_house_books_set.pdfIn PDF document text
    • http://nafaradevofipaf.myartsonline.com/95275809532.pdfIn PDF document text
    • https://8084a2ae-6cfb-493d-8155-0d4219c0f7e3.filesusr.com/ugd/5b3528_ca45dacc268242c089770d72db7a4ec3.pdf?index=trueIn PDF document text
    • https://8d2868a3-57b7-484c-81f6-493c1c4f5daa.filesusr.com/ugd/a8ca0f_b3ea4852b6a14061972b9d1e3a877508.pdf?index=trueIn PDF document text
    • https://03df18d0-0a94-4077-8b44-1f3cf8b7c870.filesusr.com/ugd/23a6c3_81797ea538bb416c82fe66a0dbdfe69b.pdf?index=trueIn PDF document text
    • http://keneledi.rf.gd/kefozerimolijirukavikux.pdfIn PDF document text
    • http://bixozebaxikapos.atwebpages.com/what_are_the_danger_signs_of_high_blood_pressure.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f6b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6B5 5152 bytes
SHA-256: 901c9a31adc1f55b40feee44db53d0547bee39d691326ebcb21811de99282b46
font_01_sfnt_off0001085d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1085D 15684 bytes
SHA-256: 2618e8fe75286a8aadcb07eaf48399d45754b35d2f7f6a610d4d3aa31a425b63

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